Puts Claude in your terminal to understand your codebase, edit files and handle git workflows.
AI Engineering Fluency
rajbos · App
AI Engineering Fluency analyses the session files that AI coding tools leave on your machine. Its commands show the session files, chat turns and tokens found, token use for today, this month and the last 30 days with estimated cost per model, your fluency stage in each category with tips, and estimated environmental impact. A curation command lists MCP servers and skills you load but never use. No editor is needed, and the same analysis also runs as an oh-my-posh prompt segment.
Written by ooruby from the README of @rajbos/ai-engineering-fluency 0.6.2.
Not claimed by its maker. Is this yours? Prove it and answer the findings
Why it's useful
You can see where your AI coding tokens and estimated spend go, and which tools you load without using, from files you already have.
What you could do with it
- See how many tokens you used today, this month and in the last 30 days, with an estimated cost per model.
- List the MCP servers and skills you load but never use, along with the prompt overhead they add.
- Show a one-line usage summary in your shell prompt with the oh-my-posh segment.
Written from its documentation: what it says it can do, not what our checks found.
Maintenance
Not measuredNo release date is on record for this package yet. The nightly publisher check records one as it reaches each npm package, about once every ten nights.
Release activity only: it says nothing about quality or safety, and a finished small package can be fine without releases. How it is measured
- Licence and provenance
- finding
- no LICENCE file at the root (.)
Published because it was found. A finding is information about where the limits are, not a verdict that the software is unsafe.
What this does not cover
- Everything. Treat it as you would software from anywhere else.
Receipt history: every signed receipt for every version of this listing, and what changed between them.
In its maker's words
AI Engineering Fluency - CLI to analyze token usage, cost and fluency from local AI coding session files (GitHub Copilot, Claude Code, Gemini CLI, Codex CLI, OpenCode and more)
Compare with
Compare all 4How far this has been checked
Static scanned
- What it establishes
- Its published package, or for a hosted server its source repository at a recorded commit, was read file by file, without running it, by every check in our current scan.
- What it does not
- How it behaves when it runs, or anything the scan does not read yet: several rubric checks, the repository's history, and compiled code in folders named dist or build. For a hosted server, that the endpoint runs the code that was read. The ooruby Index sets out exactly what was read.
- Exactly what was read
- Version 0.6.2, the file with digest sha512-8OiFazUS8lGauu/M1klcVl+ktW8IgyjtgVZheoQK8NpXQLXYCGwWzLpptc1hEbyp29mLFWbPlE4T9K6pobAf6A==, as the registry publishes it. A published version cannot be replaced, so this names the same bytes for anyone who checks.
- Authentication
- Runs locally. No hosted endpoint is listed for this package. You run it on your own machine, so there is no endpoint of ours to authenticate against.
Adding it
Run it with:
npx -y @rajbos/ai-engineering-fluency@0.6.2Pinned to 0.6.2, which is the version the findings above were found in. Drop the version to take whatever is newest, and the report on this page stops describing what you installed.
Where this came from
- Registry
- npm
- Package
- @rajbos/ai-engineering-fluency
- Version read
- 0.6.2
- Resolved
- 2026-10-10
Built from source, attested
npm publishes a signed statement that this exact package was built from the repository below, at this commit. It is verifiable without taking our word for it.
- Repository
- github.com/rajbos/ai-engineering-fluency
- Commit
- b93b4eb3883f
- Built by
- github.com/actions/runner/github-hosted
- Registry publish attestation
- signed by npm · 2026-10-10
- Checked
- 2026-10-10
The badge, if this is your listing
It renders the current rung (static scanned) and links back here, where what that does and does not establish is one click away. It updates itself as the evidence deepens.
[](https://ooruby.com/market/rajbos-ai-engineering-fluency)About this listing
- Kind
- App
- Category
- Developer tools
- Pricing
- Free
- Sandbox
- No
- Hosted
- No
- Updated
- 2026-10-09
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